Americans do drive guzzlers (on average). I'm just saying that even those Americans who lust after a nice European-style gas sipper, couldn't buy one because they're not on offer. Interesting to see...

Heavy curtains in front of the windows can help a lot. Buy them used to save $$. Ours would keep the room tolerably warm while the ice piled up on the inside of the windows.
Also, if you can figure...